Mesangat wetland has a high diversity of fish, which is traded for consumption by the community. The types of fish consumed have different sizes with unknown morphometric analysis and nutritional content. The purpose of this study was to determine the morphometric measurement (total weight and length, weight of visceral, fin, head, bone, fillet, and gills) and evaluate the proximate content of several commercial fish species from the Mesangat wetland, Muara Ancalong, Kutai Timur. The method used was direct sampling from the field for morphometric measurement, while fish was sampled for further proximate analysis and the results was compared to Standard National Indonesia (SNI). The results found that several species of fish used as consumption have a size that was classified as not in a good growth pattern, namely Channa striata, Notopterus chitala, Pangasiodon hypopthalmus, and Hemibagrus nemurus. Meanwhile, Channa micropeltes, Anabas testudineus, and Helostoma temminckii were found in a good growth pattern category. Furthermore, proximate analysis for sampled fish were in standard such as water content, protein, fat, and fibre. However, ash content was not in a standard. In conclusion, several sampled fish for consumption which was found in the Mesangat wetland are in a good growth condition and nutrition composition.